He was some kind of Bethel "heavy" who made contributions for both Awake! and Watchtower magazine as outlined in his cv.
As stated above, there is a lot between the lines. I perceive that he writes very carefully - maybe because he does not want to threaten relationships he still has or potentially could reactivate. He states that he was not ready to write about his past and he is pointing out to future information he might share. Wrobel seems to have left the JW since he speaks about starting a new life in 2008 "after having been a good member of a religious grouping for 45 years". I think he would not have left if he still thought this is the truth. I assume that he kept himself busy with the documentation work and fell into a dark hole after that was taken away.
He writes quite readable but with the distance of a historian - with a little hint here and there about his feelings.
I am looking forward to reading how his story is developing.